Improvement in galvanic batteries



U JEAN ARMANI) CALLAfiD.

Improvement in Galvanic Batteries.

No. 120,034. Patented 0ct.17,187h

hwcucov V Witnesses UNITED S'rA'rEs PATENT ()Frrcn.

JEAN ARMAND GALLAUD, OF NANTES, FRANCE.

IMPROVEMENT IN GALVANIC BATTERIES.

Specification forming part of Letters Patent No. 120,034, dated October17, 1871.

To all whom it may concern:

Be it known that I, JEAN ARMAND CALLAUD, of the city of Nantes, in theRepublic of France, have invented new and useful Improvements inGalvanic Battery 5 and I do hereby declare the following to be a full,clear, and exact description thereof, which will enable others skilledin the art to make and use the same, reference being had to theaccompanying drawing forming part of this specification, in which-Figure 1 represents a side elevation of my improved galvanic battery,and Fig. 2 is a plan or top view of the same.

Similar letters of reference indicate like parts in both figures of thedrawing.

My invention consists in an annular disk composed of zinc, and providedwith a series of arms extending from its center outward to itsperiphery, and in suspending said disk in such a manner within thecenter of the cup or jar containing the necessary fluids as to admit ofbeing raised or lowered, whereby the action of the liquid may begraduated thereon; also, in the construction of a copper or othernegative plate, E, forming a series of radial wings, and so as topresent a great amount of vertical surface to the action of the fluid,and so that the same can be readily removed from the cup or jar withoutdisturbing or mixing the, fluids.

In the drawing, A represents a glass cup or jar for containing thenecessary fluids. B is the disk or positive element, which is composedof zinc, and is provided with a series of arms, a, extending from itscenter or hub outward to the inner surface of its rim or periphery. (Jis a bar or strip of wood or other suitable material, which is supportedupon the upper edge of the periphcry of the jar or cup. 1) is a copperwire firmly afiixed to the center or hub of the disk, and extends upwardthrough a binding-post, d, affixed to or resting upon the upper surfaceof the said bar 0. Affixed within said binding-post is a setscrew, 0, soarranged as to engage wire D, by which means the said disk is secured atany adjusted height within the center of the jar or cup. E is thenegative-plate, composed of a piece of sheet-copper, and so folded asto. form a series of radial wings, and is placed within and upon thebottom of the cup, thereby presenting a great amount of vertical surfaceto the action of the fluid, and so that, when the battery is in action,it can be removed when desired from the jar without disturbing the fluidor mixing the same, and so as to readily peel off the deposit, whendesired, and return said plate to its place without disturbing thefluids. F is a copper wire, which is firmly affixed to the periphery ofsaid sheet of copper, and extends upward through a binding-post, f,secured to the upper surface of bar 0 at or near its end.

I do not wish to confine myself exclusively to the construction of thepositive-plate or disk B with the arms extending from the center outwardat right angles, as parallel bars extending across the disk may be used,the object being to admit of greater surface to the action of theliquid.

To prepare the battery for action the liquids ordinarily used for thatpurpose are placed within the cup in the usual manner. It is a fact wellknown that when the battery is first set the resistance of the fluid isgreatest; whereas, with the use of mysaid improvement, this difficultyis practically overcome, as the disk 15 is adjusted or lowered near tothe sulphate of. copper, thus facilitating the action; and when theresistance has diminished by the formation of sulphate of zinc the diskis readjusted or raised, thus equalizing the action of the liquid.

Having described my invention, what I claim as new, and desire to secureby Letters Patent of the United States of America, is-

1. The zinc disk B provided with arms a, and suspended within the centerof the cup or jar A, and so arranged as to admit of a verticaladjustment, substantially as and for the purpose described.

2. The combination of disk B, wire D, bar 0, and binding-post d, thewhole arranged substantially as and for the purpose described.

3. The plate E, so folded as to form a series of radial wings,substantially as and for the purpose described.

JEAN ABMAND OALLAUD.

A. SIGGAR. (50)

